Examining the Role of Exercise Timing in Weight Management: A Review

Author(s):  
Jennifer M. Blankenship ◽  
Rebecca C. Rosenberg ◽  
Corey A. Rynders ◽  
Edward L. Melanson ◽  
Victoria A. Catenacci ◽  
...  

AbstractMany adults cite exercise as a primary strategy for losing weight, yet exercise alone is modestly effective for weight loss and results in variable weight loss responses. It is possible that some of the variability in weight loss may be explained by the time of day that exercise is performed. Few studies have directly compared the effects of exercise performed at different times of the day (i. e., morning versus evening exercise). Results from these existing studies are mixed with some studies demonstrating superior weight and fat mass loss from morning exercise, while other studies have found that evening exercise may be better for weight management. Exercise timing may alter modifiable lifestyle behaviors involved in weight management, such as non-exercise physical activity, energy intake, and sleep. The purpose of this review is to summarize evidence for and against time-of-day dependent effects of exercise on weight management. Although limited, we also review studies that have examined the effect of exercise timing on other lifestyle behaviors linked to body weight regulation. While exercise at any time of day is beneficial for health, understanding whether there is an optimal time of day to exercise may advance personalized treatment paradigms for weight management.

Author(s):  
Leah M. Schumacher ◽  
J. Graham Thomas ◽  
Rena R. Wing ◽  
Hollie A. Raynor ◽  
Ryan E. Rhodes ◽  
...  

Background: Exercising at a consistent versus variable time of day cross-sectionally relates to greater moderate to vigorous physical activity (MVPA) among weight loss maintainers. This study evaluated the relationships between exercise timing and both MVPA levels and habit strength, as well as stability in exercise timing, over 1 year among maintainers in the National Weight Control Registry. Methods: Participants (n = 709) completed questionnaires assessing exercise timing, MVPA, and exercise automaticity (a measure of habit) at baseline and 1-year follow-up. At each assessment, participants were labeled temporally consistent exercisers if >50% of their exercise sessions per week occurred in one time window: early morning, late morning, afternoon, or evening. Participants exercising consistently during the same window at both assessments were labeled as having stable patterns. Results: Temporally consistent exercise at baseline, regardless of its specific time, related to greater MVPA over time (Ps< .05). Approximately half of temporally consistent exercisers at baseline exhibited stable patterns. Early morning exercise and greater exercise automaticity at baseline predicted stable patterns (Ps< .005). Temporally consistent exercise, especially during the early morning, related to greater automaticity across time (Ps< .01). Conclusions: Consistent exercise timing may help maintainers accrue more MVPA. Consistent early morning exercise was most strongly related to exercise automaticity and routine stability.


2008 ◽  
pp. 237-245
Author(s):  
K Kabrnová-Hlavatá ◽  
V Hainer ◽  
M Gojová ◽  
P Hlavatý ◽  
V Kopský ◽  
...  

Experimental and epidemiological studies suggest that calcium intake is inversely related to weight gain. Calcium of dairy origin has been shown to be more effective in promoting weight loss. However, clinical studies yielded controversial results concerning the role of calcium intake in weight change. The aim of this study was to ascertain whether the addition of calcium can affect the outcome of 3-week weight management (WM) with a hypocaloric diet characterized by a decreased calcium intake. Overweight/ obese women (n=67; BMI 32.2±4.1 kg/m2; age 49.1±12.1 years) underwent a 4-week comprehensive WM program. WM included a 7 MJ/day diet resulting in a stable weight during the first week and a 4.5 MJ/day diet with mean daily calcium intake 350 mg during the second to fourth week. Participants were divided into three age- and BMI-matched groups who received placebo or calcium (500 mg/day). Calcium was administered either as carbonate or calcium of dairy origin (Lactoval). There was no significant difference in weight loss in response to WM between the placebo-treated and calcium-treated groups. However, addition of calcium to the diet resulted in a lower hunger score in the Eating Inventory as well as a decrease in plasma resistin levels. Body composition measured by bioimpedance demonstrated that added calcium leads to preservation of fat-free mass. Nevertheless, a greater loss of fatfree mass in the placebo group might be partly due to a greater loss of water.


2008 ◽  
pp. S1-S15
Author(s):  
V Hainer ◽  
H Zamrazilová ◽  
J Spálová ◽  
I Hainerová ◽  
M Kunešová ◽  
...  

The prevalence of obesity is increasing worldwide at an alarming rate in both developed and developing countries. Obesity is a chronic complex disease of multifactorial origin resulting from a long-term positive energy balance, in which both genetic and environmental factors are involved. Genetically prone individuals are the first to accumulate fat in the present obesogenic environment. Obesity increases the risks of type 2 diabetes, hypertension, cardiovascular disease, dyslipidemia, arthritis, and several cancers and reduces the average life expectancy. Implementation of effective strategies in prevention and management of obesity should become an important target in health care systems. Weight changes throughout life depend on the interaction of behavioral, genetic and environmental factors. Weight loss in response to weight management shows a wide range of interindividual variation which is largely influenced by genetic determinants. The strong control of weight loss by genotype was confirmed by twin and family studies. Recently, special attention has been paid to nutritional, hormonal, psychobehavioral and genetic factors which can predict the response to weight reduction programme. In this article currently available data on the role of obesity candidate gene polymorphisms in weight loss and maintenance are reviewed. It is believed that an elucidation of the genetic component in the prognosis of weight management could assist in the development of more effective and individually tailored therapeutic strategies.


2012 ◽  
Vol 36 (6) ◽  
pp. 1814-1819 ◽  
Author(s):  
Vanina Rosa Noemi Cosentino ◽  
Patricia Lilia Fernandez ◽  
Santiago Andrés Figueiro Aureggi ◽  
Miguel Angel Taboada

The correct use of closed field chambers to determine N2O emissions requires defining the time of day that best represents the daily mean N2O flux. A short-term field experiment was carried out on a Mollisol soil, on which annual crops were grown under no-till management in the Pampa Ondulada of Argentina. The N2O emission rates were measured every 3 h for three consecutive days. Fluxes ranged from 62.58 to 145.99 ∝g N-N2O m-2 h-1 (average of five field chambers) and were negatively related (R² = 0.34, p < 0.01) to topsoil temperature (14 - 20 ºC). N2O emission rates measured between 9:00 and 12:00 am presented a high relationship to daily mean N2O flux (R² = 0.87, p < 0.01), showing that, in the study region, sampling in the mornings is preferable for GHG.


2020 ◽  
Author(s):  
Wesley R. Barnhart ◽  
Harrison Drew Angoff

Purpose: Relations between dietary, physical activity, and sedentary lifestyle behaviors and weight loss intent (WLI) among sexual minority (SM) and heterosexual youth.Design: Cross-sectional, 2017 National Youth Risk Behavior Survey.Setting: United States. Sample: Heterosexual male (n=6195) and female (n=5741) and SM male (n=583) and female (n=1470) youth.Measures: Dichotomized measures of dietary, physical activity, and sedentary lifestyle behaviors, WLI, and self-identified weight status.Analysis: Cumulative logistic regression models examined relations between weight management behaviors and WLI in overall sample and self-identified overweight subsample.Results: Daily breakfast, fruit juice, and salad consumption were uniquely related to WLI across sex in heterosexual youth (ps&lt;.05). Sixty minutes of physical activity was associated with lower odds of WLI among heterosexual youth (p&lt;.05). Strength training was associated with higher odds of WLI for SM females (p&lt;.05). Among self-identified overweight SM youth, dietary (salad consumption), physical activity (involvement in physical education class, strength training), and sedentary lifestyle (video game play and TV viewing) behaviors were uniquely related to WLI (ps&lt;.05) across sex, and additional correlates of WLI (fruit consumption, TV viewing; ps&lt;.05) emerged among self-identified overweight heterosexual female, not male, youth.Conclusions: Weight management behaviors uniquely relate to WLI across sex and sexual orientation, and self-identified overweight status may be an important factor related to outcomes. Findings support accessible health promotion efforts for diverse youth.


2005 ◽  
Vol 11 (6) ◽  
pp. 458-468
Author(s):  
Daniel C. Malone ◽  
Marsha A. Raebel ◽  
Julie A. Porter ◽  
Frances A. Lanty ◽  
Douglas A. Conner ◽  
...  

2018 ◽  
Author(s):  
Meghan Ariagno

This review addresses the role of nutrition and physical activity in weight management. There is not one standardized approach toward weight loss, but research demonstrates the effectiveness of following a reduced-calorie plan, as well as emphasizing increases in physical activity. Other important elements of consideration include promoting contact with weight management clinicians to provide structure, encouragement, and support. Physical activity alone has not been proven to support weight loss but in combination with a lower caloric intake can be helpful toward achieving weight loss. Sustaining weight loss is difficult for most individuals, so the support of clinicians is valuable not only in the starting phase but in the long term as well.  This review contains 1 figure, 4 tables and 37 references Key words: activity, calorie, carbohydrate, diet, dietitian, exercise, intervention, lifestyle, maintenance, obesity, portion, technology, weight


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